Frost Dates for Lawrence, IN
In Lawrence, IN, the average last spring frost is around Apr 18 and the average first fall frost around Oct 26, for a growing season of about 190 days. For frost-tender plants, wait until May 6, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Castleton 2 S, IN weather station, 3 miles away, elevation 824 ft. Frost can come earlier in low spots and valleys and later near cities and large lakes.
Frost probability by date
Chance of a 32°F frost after the spring date, or before the fall date.
| Chance | Last spring frost | First fall frost |
|---|---|---|
| 10% | May 6 | Oct 12 |
| 20% | May 1 | Oct 18 |
| 30% | Apr 25 | Oct 21 |
| 40% | Apr 21 | Oct 24 |
| 50% | Apr 18 | Oct 26 |
| 60% | Apr 14 | Oct 29 |
| 70% | Apr 11 | Oct 31 |
| 80% | Apr 7 | Nov 3 |
| 90% | Apr 3 | Nov 7 |
Light frost vs. hard freeze
Average (50%) dates for each temperature. Tender plants are damaged at 36°F; most hardy crops survive until 28°F.
| Temperature | Last in spring | First in fall |
|---|---|---|
| Light frost (36°F) | Apr 30 | Oct 16 |
| Frost / freeze (32°F) | Apr 18 | Oct 26 |
| Hard freeze (28°F) | Apr 5 | Nov 5 |
Planting calendar for Lawrence
Transplant Apr 25 – May 9
Transplant May 2 – May 16
Transplant May 2 – May 16
Transplant Apr 25 – May 9
Sow or transplant Apr 25 – May 9
Sow or transplant Apr 25 – May 9
Sow or transplant May 2 – May 16
Sow or transplant Mar 21 – Apr 4
Fall sowing Aug 31 – Sep 28
Fall sowing Aug 31 – Sep 21
Fall sowing Aug 17 – Aug 31
Sow or transplant Mar 21 – Apr 4
Fall sowing Aug 17 – Sep 14
Transplant Apr 4 – Apr 18
Fall sowing Aug 3 – Aug 17
Transplant Mar 28 – Apr 11
Fall sowing Aug 3 – Aug 17
Fall sowing Aug 3 – Aug 17
Fall sowing Sep 14 – Oct 5
Fall sowing Aug 17 – Aug 31
Plant Mar 21 – Apr 4
Based on the average last frost (Apr 18) and first frost (Oct 26). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.